Ophthalmic mounting



Sept. 27, 1932. L, SCHUMACHER 1,879,825

OPHTHALMI C MOUNTING Filed Feb. 1. 1930 lzzzerlz 'clzzzmaclzez:

I N VEN TOR ,2 7% W AT ORNEY Patented Sept. 27, 1932 ELMEB- L.SGI-IUMACHER, 0F SOUTHBEIDGE, MASSACHUSETTS, ASSIGNOE T0 AMERICAN.OPTICAL COMPANY, OF SOUTHBBIDGE, MASSACHUSETTS, A VOLUNTARY ASSOCIATION OF MASSACHUSETTS OPHTHALMIC MOUNTING Application filed February1,1930. Serial No. 425,240.

This invention relates to improvements in ophthalmic mountings and hasparticular reference to an improved bridge securing means between thelens holding members of a pro tection mounting.

The rinci al ob ect of the invention 1S n J provide means for securelyattaching and, the same time easil TGIIIOVIDO the bIlCl6 7 b b an 0hthalmic mountin and articularl to at in in a goggle or eye protectorwhere an adjustable ing member out of'contact with the face of i thewearer.

Another object of the invention is to provide a'quicl: and simplemeans-of adjusting the distance between the-lens holding members in sucha mounting. Another object of the invention is to provide improvedadjustable means for adjusting the distance between the lens holdingmembers wherein the said distance will remain fined during the use ofthe mounting.

Other objects and advantages of the invention will become apparent fromthe following description taken in connection with the accompanyingdrawing, and it will be apparent that many changes may be made in thedetails of construction and arrangement of parts without departing fromthe spirit of the invention as expressed in the accompanying claims. I,therefore, do not wish to be limited to the exact details shown anddescribed as the preferred forms only have been shown by way ofillustration.

Referring to the drawing:

Fig. I is a front elevation of the protection mounting embodying theinvention.

Fig. II isa side elevation of the protection mounting shown in Fig. I.

' Fig. Ill is a fragmentary perspective View showing the flexible bridgeconnection to the protection mounting. 65:

Fig. 1V is a sectional view taken as on line IVIV of Fig. Ill of aslight modification of the invention. I I 7 in most types of eyeprotectors'used in industrial occupations by welders, chippers andothers, the eyecups are connected centrally by a flexible member, suchas a chain, which permits a close contact between the edge or the eyecupand the wearers face and also permits the goggles to be folded when notin use. These chain bridges are often covered with a rubber-tube, or asimilar protective member which prevents the chain from be coming rustedand discolored from perspiraticn and the like. It is also a feature ofthese bridges that adjustment of the distancebetween the eyecups isusually made by twisting' one eyecup and so shortening the chain.- Theundesirable feature of this adjustment is its imp rmanency and unduestrain on the E i covering member from the unnatural position of t ichain inside. W en one eyecup mem- 301 is released, the chain memberuntwists and she adjustment is thereby lost and must be repeated whenthe goggle is again brought 80 into use. As the chain is invariablypermanently fixed to the eyecup ateach'end' and not removable without agreat deal of labor and'damage to the eyecup, it will readily be seenthat'the protective covering will soon be- 85 come soiled and unsanitaryand that no means are provided for changing it.

It is theprime object of'my' invention, therefore, to provide a simplemeans wherein the distance between the eyecup may be permanentlyadjusted and the protective member on the bridging means quickly andeasily interchanged;

Referring to the drawing, in which similar if characters of referencedesignate similar parts throughout several views, the device embodyingthe invention comprises a pair of eyecups 1 having a face engaging bead2 at one end thereof and a beveled groove 3 at the opposite end thereoffor holding the lens 4: mo

[ g- CE in the eyecup. The eyec'ups 1 are split at 5 on the nasal sideto permit expansion for the insertion and removal of the lens 4.Adjacent the split5 and secured to the opposite ends of the expansibleeyecup 1 is a pair of lug members Othrough which a screw 7 extends tosecure the lens 4 in the eyecup. One of said lugs is provided with a pin8 which extends through a perforation formed inthe opposite lug 6 toprovide means tor the attachment of the end link of a chain member 9which extends between and secures the eyecups together. The chain member9 is provided with a protective resilient covering 10 formed from arubber tube or similar means to guard against rusting and 'discoloringfrom perspiration and the like. The mounting is held on the face of thewearer by a suitable headband or the like 11.

In the operation of the device the screw 7 is loosened to permit the pin8 to be drawn clear of the perforated lug 6. The chain 9 may then beremoved from the pin 8 to permit the removal of the tubular member 10 toallow it to be replaced with anew one. The distance between the eyecupsmay be shortened and adjusted to the face of the wearer by eitherremovinglinks or hooking the second or thirdlink instead of the end oneon to the pin member 8. This forms a ready means of adjustment and isquite permanent for any wearer as distinct from the prior art method oftwisting one eyecup which was obviously a very transitory adjustment andlost as soon as the mounting was removed from the wear ers face.

The chain member 9 being easily removable makes it a simple matter tochange the rubber tubing 10 when soiled or worn and so adds to thecleanliness of the goggle and prevents rusting of the metal chain whichwould take place were a worn tubular covering to be used as wasinevitable in the prior art.

Aslight modification is shown in Fig. IV in which instead of the pin 8there is used a screw member 12. The object of the use of the screw isto permit the interchanging ot the tubular member 10 and adjustment ofthe distance between the eyecup without the necessity of loosening thelens fromits position in the eyecup as is necessary with theconstruction shown in Fig. III. To detach the chain 9 from the eyecup lin the construction shown in Fig. IV it is only necessary to remove thescrew 12. This does not disturb the screw 7 which holds the lens 4against displacement in the eyecup 1. The screw member 12 is threaded toits supporting lug and is adapted to extend through an opening 13 formedin the opposite lug 6. This permits the lens 4 to be removed from theeyecup 1 without having to loosen the'screw 12.

The edge 4, which is adapted to contact with the face ot the wearer andbe shaped to contormto the wearers face, -may be provided with aprotective covering such as rubber or leather, or some similar means.

From the foregoing it will be seen that I have provided a simple yetingenious means for carrying out the object of the invention,particularly in providing extremely simple and eiiicient detachablemeans for the bridging member of an ophthalmic mounting of the typedescribed without the danger of the bridging member becoming loosenedwhile the mounting is in use. 7

Having described my invention, I claim:

1. In a device of the character described, a pair of eyecups each havingsplit ends on their nasal sides and each split end having a projectinglug portion adjacent the split so positioned as to leave a space betweenthe lugs when the split ends. engage each other, a bridge member havinga plurality of openings therein spaced longitudinally from each other, aportionot the bridge extending into the spaces between the lugs so thatan opening of the bridge occupies a position between each set of lugs,means securing each set of lugs together exteriorly of said openings andmeans extending through each set of lugs and through the respectiveopenings in the bridge member.

2. In a device of the character described, a pair of eyecups each havingsplit ends on their nasal sides and each split end having a projectinglug portion adjacent the split so positioned as to leave a space betweenthe lugs when the split ends engage each other, a bridge member having aplurality of openings therein spaced longitudinally from each other, aportion of the bridge extending into the spaces between the lugs so thatan openingof the bridge occupies a position between each set of lugs,screw means securing each set of lugs together exteriorly of saidopenings and screw means extending through each set of lugs and throughthe respectiveopenings in the bridge member.

8. In a device of the character described, a pair of eyecups-each havingsplit ends on their nasal sides and each split end having a projectinglug portion adjacent the split so positioned as to leave a space betweenthe lugs when the split ends engage each other, abridge memberhaving aplurality of openings'therein spaced longitudinally from each other, aportion of the bridge extending into thespaces between thelugs so thatan opening of the bridge occupies a position between each set of lugs,screw means securing each set of lugs together exteriorly of saidopenings and apin member secured in one lug and extending into the otherlug and through the respective openings in the bridge member.

ELMER L. SCHUMACHER.

